计算.
|
(1)3.87 +5.96= |
(2)8.79 +2.43= |
用竖式计算并验算.
|
(1)9.36 -6.39= |
(2)9.6 +2.85= |
|
验算: |
验算: |
用竖式计算并验算.
|
(1)2.8 +6.48= |
(2)20.6 -8.52= |
|
验算: |
验算: |
用竖式计算.
|
(1)32 +43= |
(2)58 -46= |
(3)7 +88= |
计算.
|
(1)68 -4+8= |
(2)6 +47-50= |
计算.
|
(1)30 +40+20= |
(2)90 -60-30= |